Some verbs (stop, postpone, admit, imagine, deny, risk) can only be followed by the gerund (-ing). Take a look at some other examples:

Avoid talking to him when he is hungry.

Have you ever considered working for the government?

I've finished writing my proposal.

However, there are verbs that can be followed by the gerund (-ing) or an infinitive without to, but their meanings are slightly different. The gerund suggests that an action is in progress, while an infinitive suggests a complete action. Look at some examples:

I saw him opening the window. ( I saw the action in progress.)

I saw him open the window. (I saw the complete action)

I was able to see them building the new car. ( I saw the action in progress.)

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Who's it going to be? Who will change the track the United States will be going down over the next four years? Will Obama bring the change the US needs, or will McCain continue the failed Bush policies of the last eight years. Listen to this podcast as we discuss the impending fate to be decided in this year's presidential elections.